Remove link to wiki

Author: j-f1

.github/CONTRIBUTING.md

@@ -44,7 +44,7 @@ Use the [Trello board](https://trello.com/b/6BmTulfx/devdocs-documentation) wher
 
 ## Contributing new documentations
 
-See the [wiki](https://github.com/freeCodeCamp/devdocs/wiki) to learn how to add new documentations.
+See the [`docs` folder](https://github.com/freeCodeCamp/devdocs/tree/master/docs) to learn how to add new documentations.
 
 **Important:** the documentation's license must permit alteration, redistribution and commercial use, and the documented software must be released under an open source license. Feel free to get in touch if you're not sure if a documentation meets those requirements.